It’s Called Public Transportation
Public transportation is for anyone and everyone. If you can’t understand this concept, you might as well buy a car or start walking. If you’ve been on the subway before, you know how crowded it can get on rush hours (and not only then). Every passenger gets one seat (and not even that, sometimes) and every seat is precious.
Not only did this person bring his bike on the subway, which take a lot of space, he also takes up three seats. This person made himself comfortable on the subway, so much so, that he actually fell asleep. Now, if anyone wants to use those seats, they have to get past his bike, and wake him up.